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https://github.com/KhronosGroup/SPIRV-Tools
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78 lines
3.0 KiB
C++
78 lines
3.0 KiB
C++
// Copyright (c) 2020 Vasyl Teliman
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef SOURCE_FUZZ_TRANSFORMATION_MUTATE_POINTER_H_
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#define SOURCE_FUZZ_TRANSFORMATION_MUTATE_POINTER_H_
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#include "source/fuzz/protobufs/spirvfuzz_protobufs.h"
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#include "source/fuzz/transformation.h"
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#include "source/fuzz/transformation_context.h"
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#include "source/opt/ir_context.h"
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namespace spvtools {
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namespace fuzz {
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class TransformationMutatePointer : public Transformation {
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public:
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explicit TransformationMutatePointer(
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const protobufs::TransformationMutatePointer& message);
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explicit TransformationMutatePointer(
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uint32_t pointer_id, uint32_t fresh_id,
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const protobufs::InstructionDescriptor& insert_before);
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// - |fresh_id| must be fresh.
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// - |insert_before| must be a valid instruction descriptor of some
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// instruction in the module.
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// - It should be possible to insert OpLoad and OpStore before
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// |insert_before|.
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// - |pointer_id| must be a result id of some instruction in the module.
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// - Instruction with result id |pointer_id| must be valid (see
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// IsValidPointerInstruction method).
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// - There must exist an irrelevant constant in the module. Type of the
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// constant must be equal to the type of the |pointer_id|'s pointee.
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// - |pointer_id| must be available (according to the dominance rules) before
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// |insert_before|.
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bool IsApplicable(
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opt::IRContext* ir_context,
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const TransformationContext& transformation_context) const override;
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// Inserts the following instructions before |insert_before|:
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// %fresh_id = OpLoad %pointee_type_id %pointer_id
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// OpStore %pointer_id %constant_id
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// OpStore %pointer_id %fresh_id
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void Apply(opt::IRContext* ir_context,
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TransformationContext* transformation_context) const override;
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protobufs::Transformation ToMessage() const override;
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// Returns true if |inst| valid pointer according to the following:
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// - |inst| has result id and type id.
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// - |inst| is neither OpUndef nor OpConstantNull.
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// - |inst| has a pointer type.
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// - |inst|'s storage class is either Private, Function or Workgroup.
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// - |inst|'s pointee type and all its constituents are either scalar or
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// composite.
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static bool IsValidPointerInstruction(opt::IRContext* ir_context,
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const opt::Instruction& inst);
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private:
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protobufs::TransformationMutatePointer message_;
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};
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} // namespace fuzz
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} // namespace spvtools
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#endif // SOURCE_FUZZ_TRANSFORMATION_MUTATE_POINTER_H_
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